Shuttle



N. W. NILSON SHUTTLE.

APPLICATIQN FILED MAR. 29, 1918- 50,172. Patented Aug. 17, 1920 SHUTTLE.

Specification of Letters Patent.

Patented Aug. 17, 1920.

Application filed; March 29, 1918. Serial No. 225,558.

To all whom it may concern Be it known that I NILs W. NILSON, a citizen of the United S tates, residing at Walpole, in the county-of Norfolk and State of Massachusetts, have invented certain Improvements in Shuttles, of which the following description, in connection with'the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to loom shuttles and has for its general object to devise a construction of shuttle with which the act of replenishing the filling or weft by hand can be performed more quickly than with the constructions now employed.

As is well understood by those skilled in this art, it is impracticable to use automatic bobbin changing orfilling replenishing mechanisms in certain types of looms, as for instance in multi-space looms or those in which several independent strips of fabric are woven simultaneously. Then the filling becomes exhausted in one of the shuttles used in a loom of this type it is necessary to shut down the machine and thus stop production on all the strips of fabric being woven while the empty bobbin holder is removed from the shuttle and replaced by a full one.

It is obvious that if a loom is weaving six strips of fabric the shut downs required for filling replenishment are boundto come at intervals so frequent that the production of the machine is very substantially reduced. It is the chief object of the present invention to devise a shuttle construction which will facilitate this operationof filling replenishment and will thus reduce the length of time that the machine is shut down for this purose.

p It has been proposed heretofore to accomplish this object by providing a shuttle with a top or bobbin holder separable from the base so that when the filling in the holder becomes exhausted this holder may be re-' moved and replaced by another containing a full bobbin. The present invention provides a shuttle of this general type having an improved mechanism for securing the holder to the base. i

The invention will be readily understood from the following description of the embodiment of the invention at present preferred and the novel features will be particularly pointed out in the appended claims. In the accompanying drawings:

UNITED-STATES PATENT OFFICE.

Figure 1 is a side elevation of a shuttle comprising a base and cop or bobbin holder,

showing these parts separated from each other;

Fig. 2 is a plan view of the base of the shuttle shown in Fig. 1, and

Fig. 3 is a cross sectional View on the line 3-3, (Fig. 1).

The present invention provides a shuttle inwhich the base and top or bobbin holder, while normally secured in their usual relationship, are separable so that the bobbin holder can be quickly detached from the base when the filling in it becomes exhausted and can be replaced by another holder containing a full bobbin.

The arrangement shown comprises a base 2 which is of the usual construction except for the features by which the top or bobbin holder 3 is removably secured thereto. The bobbin holder also may be of anyusual or suitable construction. A plate 1 is secured to the lower face of the holder 3 and is provided with a beveled V-shaped end portion 5.

This part is arranged to have an interlocking engagement with a plate 6 secured to the upper face of the base 2 and having a .V-shaped notch formed therein which is undercut, as clearly shown in Figs. 1 and 2, so that the part 5 .of the plate l will fit snugly into this notch. Th1s arrangement provides a freely disengageable connection between the holder and base which aids in guiding the holder into a central position on the base and prevents any movementof the holder on the base except in a direction topin 7 is fixed to project at right angles to the face of the plate 4, and is designed to enter a hole 8 formed in the base 2. A notch ,9 cut'in one side of this pin is arranged to receive a latch 10 which secures the-pin in the hole 8. For this purpose the latch is pivoted on a screw 11 (Fig. 2), and a spring 12 which bears against one edge of the latch holds it normally in substantially the position in which it is shown (Fig. 2) where it overlies the upper end of the holder 8. A plate 13 secured in the upper face of the base supports the latch 10 against movement in a direction normal to said face. The end of this latch is turned upwardly to form a finger piece 14: andthe lower end of the pin 7 is beveled so that when the pin is forced into the hole 8 its beveled face will swing the latch outwardly until the notch 9 comes into register with it when the spring 12 will force the latch into the notch.

It will now be understood that in order to secure the holder to the base it is merely necessary to tip the left hand end of the holder downwardly and insert the point 5 under the overhanging edge of the plate6. The pin 7 is then pressed into the hole 8 and the plate 4: is brought into contact with the upper face of the base 2 at which time the latch 12 enters the notch 9 and fastens the holder in this position' The holder thus is secured rigidly to the base so that the shuttle acts exactly like a solid shuttle of the usual construction. When the filling in the holder becomes depleted the attendant stops the machine, releases the latchlO by pressing against the finger piece 14: and withdraws the holder from the base, the act of pulling the pin 7 out of the hole 8 serving also todisengage the part 5 from the plate 6. Another holder having a full bobbin is immediately secured to the base in the manner above described :and the machine is started again. 7

of removing the emptyholder from shuttle base and also that of fastening a full holder to the base. At the same time these parts are simple in construction so that they can bereconomically manufactured and easily secured to the shuttle parts and they are also of such sturdy construction that they willwear for a long time without requiring repairor replacement. The ease with which the holder replacing operation can be accomplished and the fact that the securing devices fasten the holder firmly to the base are very important practical considerations.

It is obvious that if desired the latch could be mounted on the holder instead of onthe base and that the particular embodiment of the invention herein described and illustrated can be modified in many particulars without departing from the spirit or scope; of the invention.

lVhat is claimed as new, is:

1. A loom shuttle of the character described, comprising a base, a bobbin holder, a plate secured to the base and having an undercut notch therein the walls of which notch diverge as they extend toward the opposite end of the base, aplate'fiiied to one end of the holder shaped to enter said notch and rest in engagement with saidwalls when the holder is in its operative position on the p .base, said diverging walls cooperating with the plate on said holder to guide the holder .into a central position on the base while it is being attached thereto, a pin projecting from the bottom of the holder near one end thereof,said base having ahole therein to receive said pin, and a springoper-ated latch carried by said base and arranged to engage said pin to cooperate with said plates to positively secure the holder to said base.

2. A loom shuttle of the character described, comprisinga base, a bobbin holder,

' a plate secured to the base and'having an undercut V-shaped notch therein, a plate fixed to one end of said holder having a 'V- shaped part shaped to fit within saidnotch, a shouldered pin projecting from the bottom of the holder near one end thereof, said base having a hole therein to receive said pin, and a spring operated latch mounted on said base and arranged toengage the shoulder on said pin whereby it cooperates with said V- shaped plates to positively secure: the holder to said base, said latch having a finger piece lying close to the end of. the holder when in i s operativepositionon the. base and in a convenient position to be engaged by the finger of an attendantto be released and thereby permit the attendant to remove the holder from the base.

In tcstimony'whereof I have signed my name to this specification.

NILS w. NILSON. 

